Databricks Data Engineer Associate Question 237
Select 3You are working with a Delta Lake table in Databricks and need to ensure the transactions performed on the table are ACID-compliant. Which of the following characteristics confirm that a transaction is ACID-compliant in Delta Lake?
- A
The table supports automatic conflict resolution during concurrent writes.
- B
The table ensures that all committed transactions are durable, even in case of a system failure.
- C
The table provides schema enforcement to prevent invalid writes.
- D
The table allows changes to be visible to some users while still in progress for others.
- E
The table ensures atomicity by rolling back changes if a transaction fails.
Show answer and explanation
Correct answers: A, B, E
Explanation
Delta Lake ensures ACID compliance by supporting automatic conflict resolution (isolation), ensuring durability of committed transactions, and maintaining atomicity by rolling back incomplete transactions. These features guarantee consistency and reliability when working with data in Databricks.
- A. Correct.
Correct: Automatic conflict resolution ensures isolation, a key part of ACID compliance.
- B. Correct.
Correct: Durability ensures that once a transaction is committed, it remains persistent, even in the event of a failure.
- C. Incorrect.
Incorrect: Schema enforcement is important for data integrity but is not directly related to ACID compliance.
- D. Incorrect.
Incorrect: ACID compliance requires isolation, meaning that changes should not be visible to any user until the transaction is complete.
- E. Correct.
Correct: Atomicity ensures that a transaction either completes fully or none of its changes are applied, which is essential for ACID compliance.